Added ability to create new wordpress environments

* Standardizes folders, db and domains during development
* Creates nginx-config/sites/local-sitename-dev.conf
* Creates/appends CreateDB 'local-sitename' lines to database/init-custom.sql
* Installs new wordpress env `www/local-sitename`
* Appends `local.sitename.dev` to `/etc/hosts`
* Starts vagrant and provisions